Model paper

11th Standard

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Biology

Time : 00:50:00 Hrs
Total Marks : 80

    Part-A

    Answer all the questions

    10 x 1 = 10
  1. The most basic amino acid is

    (a)

    Arginine

    (b)

    Histidine

    (c)

    Glycine

    (d)

    Glutamine

  2. Proteins perform many physiological functions. For example some functions as enzymes. One of the following represents an additional function that some proteins discharge:

    (a)

    Antibiotics

    (b)

    Pigment conferring colour to skin

    (c)

    Pigments making colours of flowers

    (d)

    Hormones

  3. A living organism is differentiated from non- living structure based on

    (a)

    Reproduction

    (b)

    Growth

    (c)

    Metabolism

    (d)

    Movement

  4. A group of organisms having similar traits of a rank is

    (a)

    Species

    (b)

    Taxon

    (c)

    Genus

    (d)

    Family

  5. Every unit of classification regardless of its rank is

    (a)

    Taxon

    (b)

    Variety

    (c)

    Species

    (d)

    Strain

  6. Which of the following is not present on same rank?

    (a)

    Primata

    (b)

    Orthoptera

    (c)

    Diptera

    (d)

    Insecta

  7. Which taxonomic aid gives comprehensive information about a taxon?

    (a)

    Taxonomic Key

    (b)

    Herbarium

    (c)

    Flora

    (d)

    Monograph

  8. Who coined the term biodiversity

    (a)

    Walter Rosen

    (b)

    AG Tansley

    (c)

    Aristotle

    (d)

    AP de Candole

  9. Cladogram considers the following characters

    (a)

    Physiological and Biochemical

    (b)

    Evolutionary and Phylogenetic

    (c)

    Taxonimic and systematic

    (d)

    None of the above

  10. Molecular taxonomic tool consists of

    (a)

    DNA and RNA

    (b)

    Mitochondria and Endoplasmic reticulum

    (c)

    Cell wall and Membrane proteins

    (d)

    All the above

  11. Part-B

    Answer all the questions

    10 x 2 = 20
  12. Given below is the diagrammatic representation of one of the categories of small molecular weight organic compounds in the living tissues. Identify the category shown & one blank component" X" in it.

    CATEGORY COMPOUND
    Cholesterol Guanine
    Amino acid NH2
    Nucleotide Adenine
    Nucleoside Uracil
  13. Distinguish between nitrogenous base and a base found in inorganic chemistry.

  14. Distinguish between Reducing sugars and Nonreducing sugars.

  15. How is peptide bond formed?

  16. What are the three types of RNA?

  17. What is tRNA?

  18. Are reducing sugars different from non-reducing sugars? Yes means give reason.

  19. Patients with cardiac problems are advised to eat food cooked in Vegetable oils with polyunsaturated fatty acid? Give reason.

  20. Differentiate between probiotics and pathogenic bacteria

  21. Why mule is sterile in nature?

  22. Part-C

    Answer all the questions

    10 x 5 = 50
  23. Explain the different types of protein bonding

  24. Write a note on the Structure of proteins.

  25. Write down the properties of enzymes

  26. What are enzyme Inhibitors? Explain the two types of inhibitors?

  27. Briefly describe the Enzyme cofactors.

  28. Describe the structure of DNA as proposed by Watson and Crick.

  29. What are the types of cofactors? Explain each of them.

  30. Explain the structure of DNA with Watson and Crick modal.

  31. Can we use recent molecular tools to identify and classify organisms

  32. Explain the role of Latin and Greek names in Biology

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